CYDNIDAE OF THE WESTERN HEMISPHERE — FROESCHNER 659 



(1.55-2.02); anterior margin sliallowly emarginate; lateral margins 

 constricted subbasally; transverse impression weaker medially, marked 

 by band of coarse punctures; anterior lobe moderately tumid, coarsely 

 punctate laterally and subapically, finely punctate medially and on 

 calli; posterior lobe with scattered, small punctures becoming finer 

 posteriorly, unbones not punctate. 



Scutellum: Length httle less than width, 0.81 (0.65-0.91) :0. 94- 

 (0.78-1.04). 



Hemelytron: Mesocorium abundantly punctate except in post- 

 median area; exocorium closely punctate for full width. 



Propleuron : Prosternal carinae rounded, almost as high as labial II. 

 Legs (figs. 131, 160): Anterior femur with strong, bifid spine ven- 

 trally on basal third and small simple one near apex on posterior 

 margin; anterior tibia with decided median angulation ventrally; 

 posterior femur with ver}^ short, oblique spur subapically on antero- 

 ventral margin. 



Terminalia: Gonostylus as illustrated (fig. 298). 

 Length of body: 3.43(2.66-3.68). 



Female: Similar to male, anterior pronotal lobe not tumid, legs 

 without modifications described. 



Head: Length-Avidth ratio, 0.62(0.56-0.66) :0.73(0.66-0.80); inter- 

 ocular width, 0.45(0.44-0.48). Antennal segments: I, 0.16(0.15- 

 0.17); II, 0.05(0.05-0.06); III, 0.31(0.26-0.36); IV, 0.42(0.33-0.46). 

 Pronotum: Length-width ratio, 1.17(0.97-1.36) :1.84(1.62-2.08). 

 Scutellum: Length-width ratio, 0.80(0.71-0.91) :0.93(0.87-0.97). 

 Length of body: 3.15(2.79-3.51). 



Type data. — The types, which Say described from "Pennsylvania" 

 and "Missouri," are probably lost, Uhler (1878, p. 372), however, 

 stated that there were specimens in the T. W. Harris collection 

 (MCZ) which were named "Cydnus spinifrons by Mr. Say." These 

 specimens, as well as specimens of certain other species in the Harris 

 collection, have been considered in a special sense. Since Say's 

 collections have been destroyed, and because these specimens repre- 

 sent some of the little-remaining material studied by Say, workers 

 have generally accepted them as sort of substitute types for Say's 

 species. The specimens of spinifrons listed by Uhler were reported 

 as "No. 68, Harris Collection, Cambridge, Mass., March 18, 1828, 

 May 15, 1831, Sept. 1831." Obviously, these cannot be the original 

 types because the dates of capture are later than the publication date 

 of the original description. 



Specimens studied, — 51 males, 42 females. 



Canada: Ontario: Ridgeway; May. 



United States: Arkansas: Washington Co.; May. District of Columbia: 

 Washington, D.C. Florida: Homestead, Pompano; February. Georgia: Jasper 



